1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2de71182aaf8a97106980c0d2d0144bda78c1e2b99efe24a45a0dfb7fdd5b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6e896f4-f36b-4058-9644-21bef83300e7.json and https://artists.proofprofile.net/proofs/artist/f6e896f4-f36b-4058-9644-21bef83300e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oração: A Nós Descei, Divina Luz (Ao Vivo)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ccff00ac5dbb3d8bd6c8114505db73ba6f4639b9d22b0f039f5e24f30a195e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41736315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c918af780dcb2b8abb5acef70e2339fbb027b10cf52620fce497493d59f1b03. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41736316.
Eu Creio Nesta Unção / Benção da Medalha de São Bento / Oração Pai Nosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a4926fa6f9d76b3e5d90de63e59215ff2899271f8c03621c25d868e56ae9e6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21830079.
Diante da Cruz, Alcançamos a Vitória / Oração de São Patrício
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705a8b89229ad8f4f59e60c26ef24b38260ef35df3802a0f8773aa81e9bc747f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21830081.
A Cruz Sagrada Seja Minha Luz / Matheus 7, 7-8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186873793745ae15d560bd0fb36ec4ef240b780298b8a34542670c889b6c870e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21830083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0074e247ca318fc991cec2428f68676187c116bd07cea290cc061a899dca5a2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21830085.
Livrai-nos do Mal: A nossa vitória é a cruz de Cristo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b9e1a0aea4a722ccbec1560acd44bf5df323b0a7c91dbe5834a9be04d69e70. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848bd5d3dada19a962a420686810d4b300d6e5f242662b24702d881709c8d5db. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400029.
Livrai-nos do Mal: Minha Força Vem do Alto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e923b9e3baabaeb1c3e99e569b1baa07ee80d181f67a21d3b2bca487bbaae2. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe477e001b892abec1af0cebce267227d43e2e74ad9e875711a1df3404b734f14. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07453f18d0ac66dc9739352920bda24fd5547cc50fc21a18c9c8341edfccaf13. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59286b9b315ed3b376f60b9a31048ad815be6e6ad3557ab8487df239db244797. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd64fcb775ad91a40ebcbe2b77e7a0305990d020293d7c51f178ae7f02b1c960. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a90558e230b212dccbaf5c02415dbf90bf0515244600eca313259385b1a392a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc861dce5d1a3825288911c5e5e49e1f80f8f3d59c97549451ae0eb1703fcf71b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef84e2f2fa1b0eac29b1e0013375a5fe701cfa4b5dd81e355d3c5c186573f8bc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb968730513e0913a9a741d655e35288e350ce9df3fef1623a7ced03b5840031d. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e37bf4c8b758dad7bf14e7c0cdc5be8e6715dd1407afe4ac20f4d579da7756a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26641ecd48363184306953377385869c050228e323e125bac159175eabd9f1d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb8ea5e9bca48c102a646a8d7f1f9c74ba8547f9333735bc7497e646e04017c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFU72400041.